[mythtv-users] Assistance with digital audio configuration requested

[Daryl McDonald]

On Tue, Aug 20, 2013 at 5:23 PM, Joseph Fry <joe at thefrys.com> wrote:

> >> >> >> > May I piggy-back a related question here?  On my FE/BE dual
> boot,
> >> >> >> > I
> >> >> >> > have
> >> >> >> > to
> >> >> >> > unplug the cord from the headphone jack on the PC to get audio
> on
> >> >> >> > Windows,
> >> >> >> > (it can stay plugged into the TV) and plug it back in for
> Ubuntu.
> >> >> >> > I
> >> >> >> > have
> >> >> >> > HDMI out of PC and HDMI into TV. Audio should work on the HDMI
> for
> >> >> >> > both
> >> >> >> > scenario's shouldn't it?
> >> >> >> >
> >> >> >> I am a bit confused.... are you saying that plugging in your
> >> >> >> headphones mutes the HDMI in windows, but not in Ubuntu?
> >> >> >>
> >> >> > It's a 1/8" stereo patch cord from audio in on my TV going to the
> >> >> > audio
> >> >> > out
> >> >> > (aka headphone jack) of my PC. But yeah, when I unplug it from the
> PC
> >> >> > I
> >> >> > get
> >> >> > sound in windows (I assume through the HDMI) then I have to plug it
> >> >> > back
> >> >> > in
> >> >> > to get sound in Ubuntu. I would rather stay with Ubuntu but if I
> have
> >> >> > to
> >> >> > switch (LG's blu-ray not supported in linux) it would be nice to
> have
> >> >> > HDMI
> >> >> > audio in both cases.
> >> >>
> >> >> Most likely you just need to change your default audio device in
> >> >> Ubuntu to your video card's HDMI port.  I don't have an Ubuntu box in
> >> >> front of me (just mythbuntu), but if you look in the audio
> >> >> configuration panels, you should find something.  Assuming your
> system
> >> >> has drivers for the video card's sound capabilities.
> >> >
> >> > I have two options in sound output, analog and digital, neither
> function
> >> > with the patch cord unplugged and only the analog works with the cord
> >> > in.
> >> > There was a disk with the video card for windows. Any idea how I could
> >> > find
> >> > software for Ubuntu?
> >>
> >> Typically, you will want to stick with the drivers available in the
> >> Ubuntu repositories.  If your card has any vendor created drivers
> >> available, you should find them in the "Additional Drivers" app.
> >> Typically Ubuntu will inform you with a popup that vendor provided
> >> drivers are available for your card.
> >>
> >> While in most cases, the open source drivers are adequate... however
> >> advanced features of the card are often only possible with the binary
> >> drivers from the vendor.  For licensing reasons, most distros don't
> >> install these by default.
> >>
> >> What video card do you have?
> >>
> >> It is also possible that the outputs your seeing are only showing one
> >> of the cards.... you may have to do something to switch cards to see
> >> the other device's outputs.
> >> _______________________________________________
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> >> mythtv-users at mythtv.org
> >> http://www.mythtv.org/mailman/listinfo/mythtv-users
> >
> >
> > I believe that it is a MSI R5450 series VGA/HDMI/DVI 1Gb card. Searching
> for
> > additional drivers shows four options, three of which are "experimental
> > beta" the forth is (post-release updates) and looking at this again
> reminds
> > me that I looked here a while back, tried one? option that failed
> miserably
> > and I ended up wiping and reinstalling 12.04/64. The post-release should
> be
> > OK, do you think? Is there a way to just un install that driver, instead
> of
> > the earlier drastic solution? As I recall the screen was rendered useless
> > last time, I would probably only be able to get a terminal from a live CD
> > boot, didn't think of that then.
> >
> > Daryl
>
> If it fails, you can still get to a console.  The graphics drivers are
> only used in X... just Ctrl+Alt+F1 (or F2,F3,F4...) to open a terminal
> session.  F7 is your X session.
>
> Often all you need to do if it fails is rename you xorg.conf  (mv
> /etc/X11/xorg.conf /etc/X11/xorg.conf.bak) to clear the settings out
> of it... X11 should properly detect the settings and work fine.
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> mythtv-users at mythtv.org
> http://www.mythtv.org/mailman/listinfo/mythtv-users
>

I'm still just a tad apprehensive, when I highlight the post-release deiver
it describes itself with the following text:
 3D-accelerated proprietary graphics driver for ATI cards.

This driver is required to fully utilise the 3D potential of some ATI
graphics cards, as well as provide 2D acceleration of newer cards.

All this talk of 3D and 2D acceleration, do you think there is underlying
audio benefits in there somewhere?

Daryl
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